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| Registros recuperados: 214 | |
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| Zuiderwijk, Annie. |
| Courtship display characteristics are described and compared for the newts Triturus cristatus and T. marmoratus and patterns of male competitive behaviour are recognized. In interpreting the data, the operational sex ratio has to be taken into account, which was highly biased towards males in both species, more in T. marmoratus than in T. cristatus. When sexual active, males of cristatus had more encounters than males of marmoratus, whereas the latter spent more time residing mating places. The male’s display towards a female differed in time structure, variability and in behaviour characteristics. T. marmoratus display follows a fixed pattern; males succeeded better in restraining a female than males cristatus did. Courting males cristatus allowed other... |
| Tipo: Article / Letter to the editor |
Palavras-chave: Salamandridae; Triturus; Courtship behaviour; Sexual strategy; Competition. |
| Ano: 1990 |
URL: http://www.repository.naturalis.nl/record/504436 |
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| Hartog, J.C. den. |
| The genus Amphiprion Bloch & Schneider, 1801, is represented in the Seychelles by two species, A. akallopisos Bleeker, 1853, and the endemic A. fuscocaudatus Allen, 1972. Throughout its distributional range Amphiprion akallopisos has exclusively been recorded to associate with the clownfish anemones Heteractis magnifica (Quoy & Gaimard, 1833) and Stichodactyla mertensii Brandt, 1835. During the Netherlands Indian Ocean Programme (NIOP) Seychelles Expedition 19921993 this was confirmed for the Seychelles, although the species was predominantly found with H. magnifica, the most common host anemone in the islands. So far, Amphiprion fuscocaudatus had exclusively been reported as a symbiont of Stichodactyla mertensii. During the NIOP Seychelles... |
| Tipo: Article / Letter to the editor |
Palavras-chave: Seychelles; Indo-West Pacific; Amphiprion; Clownfish anemones; Clownfish/host associations; Host preference; Competition; New records; 42.81. |
| Ano: 1997 |
URL: http://www.repository.naturalis.nl/record/319315 |
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| Manchester, Alden C.; Blayney, Donald P.. |
| The U.S. dairy industry, many segments of which supported dairy policy changes in the 1996 Federal Agriculture Improvement and Reform Act, is much different than it was 20 or even 10 years ago. This report provides a historical overview of the industry, more detailed examinations of the fluid milk market and selected manufactured dairy product markets, a discussion of future prospects and trends in the industry, and some thoughts on the implications of those prospects and trends for dairy farmers and their organizations, processors, dairy product manufacturers, and retailers. |
| Tipo: Report |
Palavras-chave: Dairy; Butter; Cheese; Nonfat dry milk; Market structure; Pricing; Competition; Livestock Production/Industries; Marketing. |
| Ano: 1997 |
URL: http://purl.umn.edu/33929 |
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| Putsis, William P., Jr.. |
| This paper provides an overview of recent research on estimating competitive interaction in food product categories. In particular, the focus of this review is on research using scanner data conducted at the disaggregate (e.g., store, chain or local market) level, including empirical studies of vertical (i.e., within-channel) conduct. Studies addressing the competitive interaction on price, as well as non-price variables (e.g., in-store display and feature advertising) are considered. The author first describes the methodologies available for measuring the competitive interaction between firms and then briefly summarizes recent empirical developments. Given the complexity of the interactions that take place in practice, it is argued that much of the... |
| Tipo: Working or Discussion Paper |
Palavras-chave: Competition; Competitive strategy; Channel behavior; Agribusiness; Demand and Price Analysis; Industrial Organization. |
| Ano: 1998 |
URL: http://purl.umn.edu/25221 |
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| Fulton, Murray E.; Gray, Richard S.. |
| Grain transportation is one of the most important economic issues for grain producers in the Northern Plains. The reliance on export markets and the long distances to port position means that transportation costs have a significant effect on the price received by farmers. In the prairie region of Canada, rail transportation is undergoing a major transformation that will affect the competitive positions of agriculture in both the United States and Canada and influence the direction of grain flows between the two countries. Rail rates are no longer legislated although a cap is still in place), restrictions on branch line abandonment have been lifted, and further deregulation of price and car allocation is being considered. Some parties, including the... |
| Tipo: Working or Discussion Paper |
Palavras-chave: Barriers to entry; Competition; Grain handling; Grain transportation; Monopoly; Railroads; Regulation; Public Economics; K2; L1; L9; L5. |
| Ano: 1998 |
URL: http://purl.umn.edu/29164 |
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| Registros recuperados: 214 | |
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